METHOD FOR PREPARING TERTIARY-BUTYL CHLORIDE

FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for synthesis of tert.-butyl chloride by interaction of isobutylene with hydrogen chloride in the presence (or absence) of a catalyst. The process is carried out at temperature -25-50°C, under pressure >=1 atm in the reaction products medium based on recycle of part of tert.-butyl chloride formed and in the mole ratio isobutylene : hydrogen chloride = 1.0:(1.0-1.02). Catalytic complex of amine hydrochloride of the general formula: -[(R)3NH]+Cl- or amide hydrochloride of the general formula: -[(R)2N=CH(OH)]+Cl- wherein R means alkyl-, aryl-, isoalkyl- can be used as a catalyst in different combinations formed in situ in the reaction mixture in interaction of hydrogen chloride with nitrogen-containing compounds feeding to recycle tert.-butyl chloride in the amount 0.001-0.05 wt.-% of the reaction mixture amount wherein isobutylene and hydrogen chloride are fed at the volume rate 180-1650 h-1. The reaction mixture is neutralized with hydrogen chloride acceptors, the end product is isolated by filtration and/or distillation and by stabilization of tert.-butyl chloride with 0.1-0.3 wt.-% of alkaline or earth-alkaline metal carbonates or hydrocarbonates. Invention provides enhancing quality and the yield of tertiary-butyl chloride and reducing waste. ^ EFFECT: improved preparing method. ^ 8 cl, 1 tbl, 16 ex